The alkaline dissolution behaviour of sea–island type polyester microfibres were successfully monitored using a cationic dye staining method. Weight reduction behaviour of the alkali‐treated microfibre fabrics and the treated fabrics stained with cationic dye were investigated in a comparative manner. The termination of dissolution monitored by both methods was also confirmed by scanning electron microscopy.
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Joonseok Koh (2004) studied this question.